Improvement in hose-couplings



W. M. HENDERSON. Hose-Couplings. No..l47,498. Paiemedfebmrmm.

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UNITED STATES PATENT CEEICEo XVILLIAM bLHENDERSON, OF PHILADELPHIA,PENNSYLVANIA.

lMPROVEMENT IN HosE-couPLlNes.

Specification forming part of Leiters Patent No. 147,498, dated February17, 18M; application filed January 21, 1874.

To all whom it may concern:

Be it known that I, WLLLLAM M. HENDER- soN, of Philadelphia,Pennsylvania, have in vented certain Improvements in Hose-Couplin gs, ofwhich the following is a specication:

This invention relates to that class of hose couplings which are made toimmediately engage with eachother without lthe use ot' the usualpositive screw-thread form'of connection, a leading' type of the samebeing illustrated in the United States Patent ot' Alfred C. Jones, No.1,131, AID. 1861. The object of this improvement is to produce acoupling by direct contact of two similar halves, which shall beair-tight when no interior pressure is experienced, and shall becomemore effcctu ally sealed the greater that interior pressure becomes; andconsists in the application to ahosecoupling of certain cone-shapedelastic rings, forming lips, which bind together in the act of coupling,making an air-tight joint, which is, furthermore, eftectually sealed byinterior pressure.

Referring' to the annexed drawing, Figure 1 shows a form of couplingwhich 'may be employed for .the ordinary purpose of coupling iire-enginehose and other similar uses. Fig. 2 shows a form adapted to therequirements ot' hydraulic, stealn, and air brakes, as einployed forrailroad purposes; and Fig. 3 illus trates the form ot' the elasticrings in their normal condition.

A A are cone-shaped elastic rings, prefera bly of pure rubber, fittedinto corresponding grooves turned in the faces of each half' of the lcoupling. Their faces, where they come to; gether, are slightlyTbeveled, as shown by Fig. 3, so that the circular edge of the leastdiam; eter shall lirst come togetherV and be subject to compression inthe act of coupling, which shall thus make an air-tight joint,unintluenced by the absence or presence of interior pressure, theinfluence of the latter being such that acting upon the inclinedsurfaces ofthe elastic rings iu the direction shown by the arrows willbind the lips of the rings more iirmly together in proportion to theinterior pressure expe rienced. I3 B is the shell oi' the coupling. (l Gare clip-springs for holding the two halves of the coupling together, ofsuch nature that any undue direct force or jerk will cause a separation.l) D are win g-valves fitted to the interior of coupling, Fig. 2, withsprings, to insure their prompt closing when separated. The wings aremade to project equal to the amount required for opening, which, whencoupled, forces each valve from its seat, establishing a passage throughthe body of the coupling.

In a hose-coupling, as' descrilzejl, the co11e shaped elastic rings A A,arranged so that in terior radial pressure binds their lips firmlytogether, making an air-tight joint, substantially in the manner setforth.

WILLIAM M. HENDERSON.

N-Vitnesses: V

FREDE. PAXsoN, MARMADUKE Mo cnn.

